From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 46c54cf2706122c37497896d56d67b0c0aca2ede ]
The Estar Beauty HD (MID 7316R) tablet uses a Goodix touchscreen, with the X and Y coordinates swapped compared to the LCD panel.
Add a touchscreen_dmi entry for this adding a "touchscreen-swapped-x-y" device-property to the i2c-client instantiated for this device before the driver binds.
This is the first entry of a Goodix touchscreen to touchscreen_dmi.c, so far DMI quirks for Goodix touchscreen's have been added directly to drivers/input/touchscreen/goodix.c. Currently there are 3 DMI tables in goodix.c: 1. rotated_screen[] for devices where the touchscreen is rotated 180 degrees vs the LCD panel 2. inverted_x_screen[] for devices where the X axis is inverted 3. nine_bytes_report[] for devices which use a non standard touch report size
Arguably only 3. really needs to be inside the driver and the other 2 cases are better handled through the generic touchscreen DMI quirk mechanism from touchscreen_dmi.c, which allows adding device-props to any i2c-client. Esp. now that goodix.c is using the generic touchscreen_properties code.
Alternative to the approach from this patch we could add a 4th dmi_system_id table for devices with swapped-x-y axis to goodix.c, but that seems undesirable.
Cc: Bastien Nocera hadess@hadess.net Cc: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Hans de Goede hdegoede@redhat.com Link: https://lore.kernel.org/r/20201224135158.10976-1-hdegoede@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/platform/x86/touchscreen_dmi.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/drivers/platform/x86/touchscreen_dmi.c b/drivers/platform/x86/touchscreen_dmi.c index cb204f9734913..f122a0263a1ba 100644 --- a/drivers/platform/x86/touchscreen_dmi.c +++ b/drivers/platform/x86/touchscreen_dmi.c @@ -163,6 +163,16 @@ static const struct ts_dmi_data digma_citi_e200_data = { .properties = digma_citi_e200_props, };
+static const struct property_entry estar_beauty_hd_props[] = { + PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"), + { } +}; + +static const struct ts_dmi_data estar_beauty_hd_data = { + .acpi_name = "GDIX1001:00", + .properties = estar_beauty_hd_props, +}; + static const struct property_entry gp_electronic_t701_props[] = { PROPERTY_ENTRY_U32("touchscreen-size-x", 960), PROPERTY_ENTRY_U32("touchscreen-size-y", 640), @@ -501,6 +511,14 @@ static const struct dmi_system_id touchscreen_dmi_table[] = { DMI_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"), }, }, + { + /* Estar Beauty HD (MID 7316R) */ + .driver_data = (void *)&estar_beauty_hd_data, + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Estar"), + DMI_MATCH(DMI_PRODUCT_NAME, "eSTAR BEAUTY HD Intel Quad core"), + }, + }, { /* GP-electronic T701 */ .driver_data = (void *)&gp_electronic_t701_data,